Why did they remove these features from MCPE???

today I discovered
that old mcpe has java edition features

if you didn't know what I said in the video
I meant from entity ai performance,
that when entity's get hit they will just immediately go back down.
like in 1.8 java.
in today's mcpe it doesn't work like that
today's mcpe relys on server tick speed (slow mo mobs and delay)
and the hand bobs
well do this, if you have a java emulator on your android
open any minecraft version, then just disable view bobbing, then look around, it should bob around a little
today's mcpe it bobs insane!
it doesn't even have to be compared just turn it on and then just check it
also performance
on the old mcpe, performance was at peak epicness.
on today's mcpe it so laggy
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